Hello people, i need some help

This is the Question:

Check the truth of the following statement: if P(A)=2/3 P(B) , P(B)=3/8 P(C) and P(C) = 2/3, then the events are mutually exclusive per two. To be honest, i cant understand that "per two" phrase.

So , two events in order to be mutual exclusive, A /\ B = 0 , P(A\/B) = P(A) + P(B)

I am not sure how to begin solving this. i noticed also that P(A) + P(B) + P(C) > 1 (13/12).

Thanks in advance ;-)